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Honeywell RTH221B1021 Quick Installation Guide

Honeywell RTH221B1021
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Advanced Installation Guide
69-2448ES—03 12
About your new thermostat
WIRINGASSISTANCETROUBLESHOOTING
Press the s or t button to select Fahrenheit or
Celsius temperature display.
Temperature display
0 Fahrenheit temperature display (°F)
1 Celsius temperature display (°C)
When correct setting is selected, press both s and t
to display next function.

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Owner's Manual36 pages

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Honeywell RTH221B1021 Specifications

General IconGeneral
TypeNon-programmable
DisplayDigital
Power SourceBattery
Temperature Control Range40°F to 90°F (4°C to 32°C)
Stages1 Heat/1 Cool
Voltage24V
BacklightNo
CompatibilitySingle-stage heating and cooling systems

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